Word Problems

Front

What is the formula to calculate the percentage of a part compared to a whole?

Back

Percentage = (Part / Whole) * 100

Front

If there are 42 teachers and 29 were present, how do you calculate the percentage of teachers present?

Back

Percentage of teachers present = (29 / 42) * 100 = 69%.

Front

How do you determine the duration a larger bottle of shampoo will last based on a smaller bottle's usage?

Back

Use the ratio of the sizes: (18 oz / 12 oz) * 16 weeks = 24 weeks.

Front

What is the formula to find the percentage of a group?

Back

Percentage = (Number of specific group / Total number in group) * 100.

Front

If there are 32 students and 9 are women, how do you find the percentage of men?

Back

Number of men = 32 - 9 = 23. Percentage of men = (23 / 32) * 100 = 71.9%.

Front

How do you calculate the rate of battery use per hour?

Back

Rate of battery use = (Initial battery - Final battery) / Time in hours.

Front

If a phone battery goes from 100% to 72% in 3.5 hours, what is the rate of battery use?

Back

Rate = (100 - 72) / 3.5 = 8% per hour.

Front

What is the formula to calculate how many problems were answered correctly on a test?

Back

Correct answers = (Percentage correct / 100) * Total problems.

Front

If a student scored 80% on a test with 30 problems, how many problems did they answer correctly?

Back

Correct problems = (80 / 100) * 30 = 24 problems.

Front

What does it mean to round to the nearest tenth?

Back

Rounding to the nearest tenth means adjusting a number to one decimal place.